John Giddens, MD
Internal Medicine Physician · Fremont, CA
John Giddens, MD is an internal medicine physician with a practice address in Fremont, California, and NPI 1417934803, issued on Dec 27, 2005. Check the license (California G45185, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- John Giddens
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- G45185 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3161 Walnut Avenue, Fremont, CA 94538
- Phone
- (510) 796-1000
- Enumerated
- Dec 27, 2005
- Record last updated
- May 9, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (510) 796-1050
- Medicare enrollment
- Enrolled (PECOS I20090219000438); accepts Medicare assignment
- Medical or professional school
- University Of California, Davis School Of Medicine, 1980
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Verify John Giddens in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G45185Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average internal medicine physician in 2024
60 Medicare Part D claims for 24 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Chlorpromazine Hcl12 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- American Current Care OF California A Medical CorporationSan Leandro, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Giddens among 17,696 internal medicine physician records in California
John Giddens, MD is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 95% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1980 · median 2004 among the 11,065 with a school on file
- Record last updated2012 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
125 internal medicine physician records list a practice address in Fremont
They are 125 of the 4,749 NPPES records with a practice address in Fremont, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Fremont → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Zulfiqar Ali, M.DFremont, CA 945381093740227
- Bala Annadurai, M.D.Fremont, CA 945381033100516
- Ashwani Bindal, MDFremont, CA 945381265406318
- Yih Chang, M.D.Fremont, CA 945381174506380
- Satyasree Konda, M.D.Fremont, CA 945381306880679
- Padmavathi Kudaravalli, MDFremont, CA 945381144221953
- Suresh Mahawar, MDFremont, CA 945381033154893
- Sherene Nagarajah, MDFremont, CA 945381710917539
Common questions
What is John Giddens, MD's NPI number?
John Giddens, MD's National Provider Identifier (NPI) is 1417934803, issued on Dec 27, 2005. An NPI identifies a provider in billing; it is not a license.
Where is John Giddens, MD located?
The NPPES record lists a practice address at 3161 Walnut Avenue, Fremont, CA, 94538. Phone: (510) 796-1000. Providers update this record themselves, so call before visiting.
How can I verify John Giddens, MD's license?
NPPES lists California license number G45185, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does John Giddens, MD prescribe under Medicare Part D?
In 2024, John Giddens, MD had 60 Medicare Part D claims for 24 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.